1
Input
2
Gain
3
CL / DR
4
Volume
5
Treble
6
Middle
7
Bass
8
CD In
9
Phones Out
10
Power switch
GA-20
Input jack for guitar / bass / keyboard (6.3mm)
Gain (=pre-amplification) knob
Clean / Drive
Volume knob
EQ: Treble
EQ: Mids
EQ: Bass
13